Robert A. Heinlein and his novel Stranger in a Strange Land: Occultist Heinlein? Where does the author draw the groundwork of the Church of All Words from? Does the practice of Michael's religion hold semblance in Kabbalistic scripture? Zohar? Other?

I have long held adherence to my respect for Heinlein's work. In Stranger in a Strange Land, it seems he is advocating a religious practice that is in admittance too complete in leading the followers to sublimity than even the mystery schools of our Earth. Even so we can see that there quite possibly is a scripture or school that Heinlein borrows from when crafting this group of perfect lovers.